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Tokuyama Corporation

USPTO Granted Patents = 506

CIPO Patents = 9

EPO Patents = 196

Trademarks = 47

Forward Citations = 2,078

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565 inventors (with patents filed for the assignee):

Junji Momoda (63 out of 63 patents)

Katsuhiro Mori (32 out of 32 patents)

Junji Takenaka (30 out of 30 patents)

4. Shinobu Izumi (20 out of 20 patents)

5. Yukihiro Kanechika (19 out of 19 patents)

6. Hironobu Nagoh (19 out of 19 patents)

7. Kenji Fukuta (18 out of 21 patents)

8. Yasutomo Shimizu (16 out of 16 patents)

9. Kentaro Fukuda (16 out of 17 patents)

10. Hiroyuki Yanagi (15 out of 15 patents)

11. Yasuyuki Yamamoto (15 out of 15 patents)

12. Takafumi Shimoda (14 out of 14 patents)

13. Takayuki Negishi (14 out of 14 patents)

14. Toru Nagashima (14 out of 14 patents)

15. Naoto Takahashi (14 out of 14 patents)

Core Competencies:

Aluminum Nitride Powder

Silicon Etching Liquid

Polycrystalline Silicon

Photochromic Optical Article

Halogen Oxyacid Solution

Semiconductor Wafer Processing

Hydrogen Chloride Dehydration

Hexagonal Boron Nitride Powder

Silica-Titania Composite Oxide

Electrolysis Element

Functional Laminate

Onium Salt Treatment Liquid

506 patents: Sort by Forward Citations

1. 12509632 - Treatment liquid for semiconductors and method for producing same (2025-12-30),

2. 12503369 - Polycrystalline silicon rod and method for manufacturing same (2025-12-23),

3. 12486171 - Method for producing aluminum nitride powder, aluminum nitride powder, and package (2025-12-02),

4. 12466999 - Silicon etching liquid, and method for producing silicon device and method for processing silicon substrate, each using said etching liquid (2025-11-11),

5. 12466732 - Method for producing halogen oxyacid solution (2025-11-11),

6. 12444617 - Semiconductor wafer processing liquid containing hypobromite ions and PH buffering agent (2025-10-14),

7. 12441620 - Method for producing trichlorosilane and method for producing polycrystalline silicon rod (2025-10-14),

8. 12434265 - Coating method (2025-10-07),

9. 12428517 - Moisture curable polyurethane composition and laminate (2025-09-30),

10. 12428390 - Chromene compound and photochromic optical article (2025-09-30),

11. 12428297 - Hexagonal boron nitride powder and method for producing the same (2025-09-30),

12. 12410095 - Crystallization method of gypsum (2025-09-09),

13. 12404172 - Hydrogen chloride dehydration method (2025-09-02),

14. 12391613 - Method for reclaiming gypsum from wasted gypsum boards (2025-08-19),

15. 12384678 - Aluminum nitride powder and method for manufacturing the same (2025-08-12),

Tokuyama Corporation is a Japanese chemical company that specializes in the manufacture and sale of various chemical products. With a history spanning over a century, Tokuyama has established itself as a leading producer of industrial chemicals, specialty materials, and fine chemicals. The company operates across multiple sectors including electronics, construction, automotive, and energy. Tokuyama's commitment to innovation and sustainability has enabled the development of advanced materials that contribute to the progress of various industries.

This text is generated by artificial intelligence and may not be accurate.

Company Badge

USPTO Data Jan 1 1976 - Dec 30 2025

506 Patents

#2 in Shunan

#372 in Japan

#1,868 in the World

Tokuyama Corporation

Forward Citations = 2,078

565 inventors:

Junji Momoda (63 out of 63 patents)

Katsuhiro Mori (32 out of 32 patents)

Junji Takenaka (30 out of 30 patents)

4. Shinobu Izumi (20 out of 20 patents)

5. Yukihiro Kanechika (19 out of 19 patents)

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